Results 211 to 220 of about 33,853 (258)
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Constellation design for spatial modulation
2015 IEEE International Conference on Communications (ICC), 2015Conventional amplitude-phase modulations (APMs) are designed such that the minimum Euclidean distance between constellation points is maximized. Unlike these modulations, the error performance of spatial modulation (SM) is not only a function of the Euclidean distances but also the energy of each symbol, i.e. constellation point.
Mehdi Maleki +2 more
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Design of Spatial Constellation for Spatial Modulation
IEEE Wireless Communications Letters, 2020In order to achieve the transmission of more extra information bits, a new design, called spatial modulation with spatial constellation design (SM-SC), is proposed to extend the size of a spatial constellation diagram in spatial modulation (SM) system by designing the component formation of the transmitted spatial constellation vector (TSV).
Fuchun Huang, Yiju Zhan
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GPS Solutions, 2001
A significant effort has been carried out in Europe to define the European Global Navigation Satellite System (GNSS), named Galileo Satellites flying in Medium Earth Orbits (MEO) will compose the system (according to the most recent architecture definition baseline); a regional complement of geosynchronous satellites may be required to increase ...
Álvaro Mozo-García +3 more
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A significant effort has been carried out in Europe to define the European Global Navigation Satellite System (GNSS), named Galileo Satellites flying in Medium Earth Orbits (MEO) will compose the system (according to the most recent architecture definition baseline); a regional complement of geosynchronous satellites may be required to increase ...
Álvaro Mozo-García +3 more
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Design of Flower Constellations for Telecommunication Services
Proceedings of the IEEE, 2011Satellite constellation designers take into consideration the entire telecommunication network and their design choices are influenced by many factors including: number of satellites, orbital characteristics, coverage area, network interconnections, system cost, and complexity.
Daniele Mortari +2 more
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Satellite-constellation design
Computing in Science & Engineering, 1999Presents the rudiments of constellation design to familiarize the reader with some of this field's methods, issues, and concerns. Two exotic constellations are under consideration for various missions.
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The constellation design problem
Annales Des Télécommunications, 1995We introduce here a new approach for designing constellations (signal sets) at high signal-to-noise ratio. It is based on a geometric formulation of the design problem. The sphere packing formulation for the Gaussian case stems as an example and the results that this approach gives on fading channels are surveyed.
Xavier Giraud, Jean -Claude Belfiore
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An Efficient LEO Global Navigation Constellation Design Based on Walker Constellation
2020 IEEE Computing, Communications and IoT Applications (ComComAp), 2020Compared with medium Earth orbit (MEO) and high Earth orbit (HEO) satellites, low Earth orbit (LEO) satellites have lower cost, smaller power loss and shorter transmission delay, which mean they can be used in many areas like navigation and space-based internet of things (IOT), etc.
Yanbo Wei, Huaijian Li, Xiaojing Du
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Constellation Design via Capacity Maximization
2007 IEEE International Symposium on Information Theory, 2007Traditional constellations are uniformally spaced. By giving up uniform spacing, constellations can be designed to have larger joint (i.e. overall) capacity or parallel decoding capacity. In this paper non-uniformally spaced (i.e. 'geometrically' shaped) constellations are designed to maximize either of these quantities.
Maged F. Barsoum +2 more
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Constellation Design for Quadrature Spatial Modulation
2017 IEEE 86th Vehicular Technology Conference (VTC-Fall), 2017This paper considers constellation design for quadrature spatial modulation (QSM) to minimize the average probability of error. Different than the constellation design previously obtained for spatial modulation (SM), it is shown that, the error performance of QSM not only depends on the Euclidean distances between the amplitude-phase modulation (APM ...
Binh T. Vo +2 more
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Design of Constellation Sets for Multistage Systems
2016 IEEE Global Communications Conference (GLOBECOM), 2016Abstract-We consider the problem of designing constellation sets for multistage systems for high spectral efficiencies. In particular we will focus on two-stage systems where the cascaded decoding stages are associated to three types of receivers with different complexities and performances.
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